* Add deprecation warning for App Container
* Apply suggestions from code review
Co-Authored-By: Joe Haddad <joe.haddad@zeit.co>
* Tweak for more dead-code elimination
* Update to use the correct router instance in withRouter so error is
thrown when router method is used during SSR
* Revert changes to with-router and add error to methods on
direct router instance
* Extend Router and override methods with error instead
* Update ServerRouter, add err.sh, and add test